Architect
ExpertGive it a repo or a plain-English idea and get back a full architecture suite: C4 Mermaid diagrams, Architecture Decision Records, OpenAPI 3.0 spec, database ERD, deployment topology, and security threat model. Reads the existing codebase first so designs are grounded in reality, not theory. Every tech choice names the alternative it rejected and explains why.
Your principal architect — designs complete systems, not just suggests them
What it can do
Codebase Discovery Before Any Design+
Before writing a single design decision, reads the existing repository — file tree, key config files (package.json, Dockerfile, CI workflows), commit history, branch topology, open PRs, and current issues. Builds a real picture of what exists, what patterns the team uses, and what technical debt is present. New designs are grounded in what's actually there, not invented from scratch.
Example tasks
Full 8-Document Architecture Suite+
Produces 8 interconnected architecture documents every single time: system overview with Mermaid C4 diagrams, three Architecture Decision Records, a complete OpenAPI 3.0 spec, database ERD, infrastructure deployment plan, and a security threat model. Everything lands in docs/architecture/ on a new branch and arrives as a GitHub PR for team review and inline comments.
Example tasks
Architecture Decision Records (ADRs)+
Every significant technical choice gets a formal ADR with five required sections: Context (why this decision was needed), Decision (what was chosen), Rationale (why this over the named alternatives — "PostgreSQL over MongoDB because this data is highly relational"), Trade-offs (what is given up, honestly), and Consequences (what the team must do as a result). No unexplained choices.
Example tasks
Mermaid Diagrams Throughout+
Generates C4 context diagrams (system + external actors + third-party services), C4 component diagrams (internal services and their connections), sequence diagrams for critical user journeys (auth flows, payment processing, data sync), and ER diagrams for the database — all embedded as Mermaid in Markdown so they render directly on GitHub and in any Markdown viewer. No external diagramming tools required.
Example tasks
Complete OpenAPI 3.0 Specification+
Produces a full OpenAPI 3.0.3 YAML specification for every API endpoint — request bodies with schemas, response shapes for all status codes, auth requirements (Bearer JWT defined in securitySchemes), error codes, and example values on every field. Complete enough to generate a typed client SDK with no additional information. Used as the direct input contract for the Code Generator agent.
Example tasks
Security Architecture & Threat Modeling+
Names specific adversaries and concrete attack scenarios — not generic category labels. Designs authentication and authorization with specific flows, token lifetimes, and rotation strategy. Classifies data sensitivity (PII, secrets, sensitive business data) field by field. Defines network security boundaries: what is internet-facing, what is internal-only, what can talk to what. Every security-sensitive API endpoint is documented with its exact auth requirement.
Example tasks
Good for
- ✓Starting a new product or service from a blank page
- ✓Documenting an existing system that nobody fully understands
- ✓Planning a major refactor, rewrite, or microservices migration
- ✓Technical due diligence — acquisition review, security audit preparation
- ✓Onboarding new senior engineers to a complex codebase
- ✓Creating the input spec for the Code Generator agent in the Software Factory pipeline
- ✓Justifying architectural choices to stakeholders, investors, or compliance reviewers
Not for
- ✕Small scripts, single-file utilities, or quick prototypes that don't need architecture docs
- ✕Hotfixes that need immediate code — not a document
- ✕Architectures requiring deep domain expertise the agent wasn't briefed on (ML model selection, medical device firmware)
- ✕Real-time operational decisions during an incident
Start with an example
- →Design the complete architecture for a multi-tenant SaaS: schema, API spec, auth model, deployment plan, and ADRs for every major decision
- →Read our existing codebase and document the architecture — I need Mermaid diagrams, ADRs, and a security threat model
- →Plan our Rails monolith-to-microservices migration: identify service boundaries, spec each service's API, and document the phased rollout
- →Design the data model and OpenAPI spec for a real-time collaboration platform targeting 50K concurrent users
- →Threat model our fintech API and design the auth system: OAuth2 flows, token rotation, role-based access, PII data classification
Supported environments
Billed in 15-min units ($2.00 each). Cancel any time.
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